from browser

test.md

State machine!

What is a state machine?

Async

• MS Docs - Asynchronous programming
• C# Async/Await/Task Explained - Deep Dive
• Correcting Common Async/Await Mistakes in .NET - Brandon Minnick
• There Is No Thread (Advanced)

Returning IEnumerable

• Makes the caller rely on most generic type so it has the flexibility to change to list/array
• Might save memory overhead via lazy loading.
• Dealing with readonly data structure is safer, where it might avoid issues like race condition.
• Enumerables (IEnumerable, IEnumerator) | C# Programming Tutorials Beginners: 17
• Iterator Pattern – Design Patterns

Another lightweight article: https://www.jetbrains.com/help/rider/ReturnTypeCanBeEnumerable.Local.html

using statement and IDisposable

MS-Docs using statement (C# Reference) IDisposable and Finalizers

REST API

.NET Core 3.1 MVC REST API - Full Course

Swagger

MS Docs - Get started with Swashbuckle and ASP.NET Core